AN EXCEPTIONAL MINT EXAMPLE OF THIS RARE EARLY COIL; CERTAINLY AMONG THE FINEST KNOWN. WE MOST RESPECTFULLY DISAGREE WITH THE PHILATELIC FOUNDATION IN CALLING THIS STAMP "PREVIOUSLY HINGED". WE SEE NO TRACE OF HINGING WHATSOEVER.

Expertization: with 2017 Philatelic Foundation certificate. A 2015 PF certificate for a pair (#538627), of which this is the right stamp, is no longer present.